名词
中文翻译：桶身延伸
同义词：
['barrel expansion', 'barrel extension']
例句：
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1.The barrel extension allows for more storage space.
桶身延伸使得存储空间更大。
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2.The engineer designed the barrel extension to improve efficiency.
工程师设计了桶身延伸以提高效率。
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3.The barrel extension is a crucial component of the machine's operation.
桶身延伸是机器运行的关键部件。